C07D 455/00
Heterocyclic compounds containing quinolizine ring systems
Official title: Heterocyclic compounds containing quinolizine ring systems, e.g. emetine alkaloids, protoberberine; Alkylenedioxy derivatives of dibenzo [a, g] quinolizines, e.g. berberine
C07D455/00 (Heterocyclic compounds containing quinolizine ring systems) appears on 597 US grants and 482 published applications in this corpus.
Search patents in C07D- Granted patents
- 597
- Published applications
- 482
- Assignees
- 324
- Inventors
- 1,718
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 19 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 17 | 0 |
| 1981 | 11 | 0 |
| 1982 | 15 | 0 |
| 1983 | 12 | 0 |
| 1984 | 14 | 0 |
| 1985 | 16 | 0 |
| 1986 | 17 | 0 |
| 1987 | 13 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 19 | 0 |
| 1991 | 9 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 13 | 0 |
| 1995 | 7 | 0 |
| 1996 | 9 | 0 |
| 1997 | 15 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 10 | 0 |
| 2001 | 5 | 3 |
| 2002 | 8 | 18 |
| 2003 | 15 | 32 |
| 2004 | 16 | 20 |
| 2005 | 15 | 16 |
| 2006 | 12 | 12 |
| 2007 | 11 | 11 |
| 2008 | 4 | 12 |
| 2009 | 4 | 13 |
| 2010 | 7 | 22 |
| 2011 | 14 | 15 |
| 2012 | 15 | 9 |
| 2013 | 10 | 20 |
| 2014 | 10 | 24 |
| 2015 | 12 | 24 |
| 2016 | 20 | 24 |
| 2017 | 13 | 26 |
| 2018 | 16 | 18 |
| 2019 | 17 | 21 |
| 2020 | 14 | 34 |
| 2021 | 20 | 22 |
| 2022 | 13 | 16 |
| 2023 | 13 | 23 |
| 2024 | 10 | 16 |
| 2025 | 9 | 18 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluorescent dye, preparation method and uses thereof12 May 2026US 12,625,141 B2Fluorescence Diagnosis (Shanghai) Biotech Company
- Nitrogen-containing heterocyclic derivative inhibitor, and preparation method therefor and use thereof28 Apr 2026US 12,612,403 B2Jiangsu Hansoh Pharmaceutical Group Co., Ltd.
- Processes for the preparation of multicomponent crystalline forms of active pharmaceutical ingredients using solvent vapour24 Mar 2026US 12,583,860 B2Apotex Inc.
- VMAT2 inhibitor and preparation method therefor and application thereof3 Mar 2026US 12,565,495 B2Luye Innomind Pharma Shijiazhuang Co., Ltd.
- Nitrogen-containing heterocyclic compound and use thereof23 Dec 2025US 12,502,386 B2Shanghai Shijiang Biotechnology Co., Ltd
- Organic electroluminescent materials and devices8 Oct 2026US 2026/0314258 A1Universal Display Corporation
- Bulky and small-steric-hindrance ligand and use thereof17 Sep 2026US 2026/0273518 A1Dg Hc Optical Co., Ltd
- Heteroaryl enhancers of the particulate guanylyl cyclase receptor a27 Aug 2026US 2026/0250275 A1University of Florida Research Foundation, Inc.
- Inhibitors of NLRP313 Aug 2026US 2026/0234123 A1
- Compounds for treating opioid misuse13 Aug 2026US 2026/0234147 A1University of Florida Research Foundation, Inc.
Most cited
By later US patents
- Pyrido[2,1-A]Isoquinoline derivatives112US 6,727,261 B2Hoffman-La Roche Inc. · 2004
- Use of certain imidazol carbazols in treating stress-related manic-depressive disorders90US 5,561,149 ASandoz Ltd. · 1996
- Stilbene derivatives as anticancer agents78US 5,430,062 AResearch Corporation Technologies, Inc. · 1995
- Composite useful in photolithography72US 5,108,874 AMicroSi, Inc. · 1992
- Radiation sensitive plates65US 5,130,227 AVickers, Incorporated · 1992